Giants put Belt on DL, activate Cain

San Francisco Giants' Brandon Belt, left, reacts after being hit by a pitch on his left hand as a trainer and manager Bruce Bochy, right, attend to him against the Los Angeles Dodgers during the second inning of a baseball game, Friday, May 9, 2014, in Los Angeles. (AP Photo/Danny Moloshok)

Cain missed two turns in the rotation. He last pitched on April 23 because of a cut on the tip of his index finger, which occurred in the clubhouse kitchen at AT&T Park when he tried to catch a knife that fell out of his hand.

Belt, who led the club with nine home runs entering Saturday, broke his left thumb Friday night when he was hit with a pitch by Paul Maholm. He is expected to be out for at least six weeks, and is back in San Francisco to see a hand specialist. Catcher Buster Posey started at first base Saturday against Zack Greinke, but manager Bruce Bochy said that left fielder Michael Morse will get the bulk of the playing time at first because of his experience there.

The Giants also purchased the contract of outfielder Tyler Colvin from Triple-A Fresno and optioned right-hander George Kontos to their Pacific Coast League club. The fourth-year reliever has appeared in only one game for the Giants this season, after making 52 appearances in 2013 with a 4.39 ERA and a 2-2 record.

Infielder Marco Scutaro was transferred to the 60-day DL to clear a spot on the 40-man roster for Colvin, who signed with the Giants in February after spending his first five big league seasons with the Cubs and Rockies. Scutaro has yet to play this season because of a lower back strain.